TypeError: can't access property 'content-type' of undefined (in browser)

[alexTayanovsky]

Happens on this line, and because of this exception, the promise is rejected.

AvaTax-REST-V2-JS-SDK/lib/AvaTaxClient.js

Line 87 in 2a9bba5

if (res.headers._headers['content-type'][0] === 'application/vnd.ms-excel') {

v18.9.0 works fine though

[contygm]

addressed in latest releases. Please reopen if the issue persists